| Q.22 | The British physicist named Paul Dirac was known to have introduced the concept of _________ in 1930. | |
| Ans | 1. cosmic radiation | |
| 2. nuclear model of atom | ||
| 3. antiparticle | ||
| 4. thermal ionisation |
Correct Ans Provided: 3
Date: 09/12/2022 Shift: 9:00 AM – 10:00 AM Q. No: 47
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